- Lens used to direct light - One who, or that which, condenses. - An instrument for condensing air or other elastic
fluids, consisting of a cylinder having a movable piston to force the
air into a receiver, and a valve to prevent its escape. - An instrument for concentrating electricity by the
effect of induction between conducting plates separated by a
nonconducting plate. - A lens or mirror, usually of short focal distance, used
to concentrate light upon an object. - An apparatus for receiving and condensing the volatile
products of distillation to a liquid or solid form, by cooling. - An apparatus, separate from the cylinder, in which the
exhaust steam is condensed by the action of cold water or air. See
Illust. of Steam engine.